CN114259090B - Heater and heating atomizer - Google Patents

Abstract

The present invention relates to a heater and a heating atomizer, the heater comprising: an inner tube provided with an atomization cavity; and the heating body is connected with the inner pipe to seal the atomizing cavity, the heating body is provided with a heat conduction hole communicated with the atomizing cavity and the outside, and the caliber of the heat conduction hole is reduced along the direction of the heat conduction hole pointing to the atomizing cavity. In the process that the low-temperature gas flows through the heat conduction holes, the low-temperature gas is in a turbulent state in the heat conduction holes, so that the residence time of the low-temperature gas in the heat conduction holes is reasonably prolonged, the low-temperature gas and the heating body are subjected to sufficient heat exchange, and most of heat generated by the heating body is absorbed by the low-temperature gas, so that the heat exchange efficiency and the energy utilization rate of the heater are improved. Meanwhile, the volume of the heating body is not required to be increased to improve the energy utilization rate, so that the heater can be ensured to realize miniaturization design. The low-temperature gas absorbs heat to form high-temperature gas which enters the atomizing cavity, and the high-temperature gas is uniformly distributed in the atomizing matrix to be uniformly heated.

Description

Heater and heating atomizer

Technical Field

The invention relates to the technical field of atomization, in particular to a heater and a heating atomization device comprising the heater.

Background

The heating atomizer can heat the atomized matrix in a way that the heating does not burn, so that the atomized matrix is atomized to form aerosol which can be sucked by a user. In view of the fact that the heating and non-burning mode can reduce the content of harmful substances such as tar in aerosol, the heating and atomizing device has extremely wide market application prospects. For the conventional heating atomizer, the heating body of the heating atomizer is usually in direct contact with the atomized substrate, so that dry heating of the atomized substrate occurs due to uneven heating.

Disclosure of Invention

One technical problem solved by the present invention is how to ensure that the heater heats the atomized substrate uniformly.

A heater, comprising:

an inner tube provided with an atomization cavity for accommodating an atomization matrix; and

The heating body is connected with the inner pipe to seal the atomizing cavity, the heating body is provided with a heat conduction hole communicated with the atomizing cavity and the outside, the caliber of the heat conduction hole is reduced along the direction of the heat conduction hole pointing to the atomizing cavity, and the gas flowing through the heat conduction hole absorbs heat and then enters the atomizing cavity to heat the atomized substrate.

In one embodiment, the central axis of the heat conducting hole is a straight line.

In one embodiment, the orthographic projection of the heat conducting hole along the axial direction of the inner tube is circular, elliptical or regular polygon.

In one embodiment, the heating body has an inner wall surface defining a boundary of the heat conduction hole, and an intersection line exists between a longitudinal section passing through a central axis of the heat conduction hole and the inner wall surface, and the intersection line is a straight line, a fold line, a parabola, an elliptic line or a hyperbola.

In one embodiment, when the intersection line is a straight line, the intersection line forms an acute angle with the central axis of the heat conducting hole.

In one embodiment, when the intersection line is a fold line, the intersection line includes a first segment, a second segment, and a third segment, the third segment is connected between the first segment and the second segment, both the first segment and the second segment are parallel to the central axis of the heat conduction hole, and the first segment is closer to the central axis of the heat conduction hole and the atomizing chamber than the second segment.

In one embodiment, the third section is perpendicular to the central axis of the heat transfer aperture; alternatively, the third section forms an acute angle with the central axis of the heat conduction hole.

In one embodiment, the caliber of the heat conducting hole is not smaller than 0.3mm, and the length of the heat conducting hole is 1mm to 1.8mm.

In one embodiment, at least one of the following schemes is further included:

the heater is an electromagnetic induction heater capable of generating heat under the action of electromagnetic waves;

the atomizing device also comprises a support piece positioned in the atomizing cavity, wherein the support piece is arranged at intervals with the heater and is used for bearing an atomizing substrate.

A heating atomizer comprising a heater as claimed in any one of the preceding claims.

One technical effect of one embodiment of the present invention is: in view of the fact that the caliber of the heat conducting hole is reduced along the direction that the heat conducting hole points to the atomizing cavity, in the process that a user sucks the heat conducting hole to enable low-temperature gas to flow through the heat conducting hole, the flow speed of the low-temperature gas at the upper portion of the heat conducting hole is larger than that of the low-temperature gas at the lower portion of the heat conducting hole, so that the low-temperature gas is in a turbulent state in the heat conducting hole, a large amount of vortex is formed in the heat conducting hole by the low-temperature gas, the residence time of the low-temperature gas in the heat conducting hole is reasonably prolonged, the low-temperature gas and the heating body are enabled to perform sufficient heat exchange, namely the low-temperature gas is sufficiently heated, and the fact that the low-temperature gas absorbs more heat as much as possible into the atomizing cavity is ensured. So that most of heat generated by the heating body is absorbed by the low-temperature gas, thereby improving the heat exchange efficiency and the energy utilization rate of the heater. Meanwhile, the heat exchange efficiency and the energy utilization rate are improved without increasing the volume of the heating body, so that the heater can be designed in a miniaturized manner. And the low-temperature gas absorbs heat to form high-temperature gas so as to enter the atomizing cavity, and the high-temperature gas is uniformly distributed in the atomizing matrix to prevent a temperature gradient in the atomizing matrix, so that the high-temperature gas uniformly heats the atomizing matrix.

Drawings

FIG. 1 is a schematic perspective view of a heater according to an embodiment;

FIG. 2 is a schematic perspective sectional view of the heater shown in FIG. 1;

FIG. 3 is a schematic plan sectional view of the heater of FIG. 1;

FIG. 4 is a schematic view of a first exemplary partial plan sectional structure of a heating body of the heater shown in FIG. 1;

FIG. 5 is a schematic view of a second exemplary partial plan sectional structure of a heating body of the heater shown in FIG. 1;

FIG. 6 is a schematic view of a third exemplary partial plan sectional structure of a heating body of the heater shown in FIG. 1;

fig. 7 is a schematic view of a fourth example partial plan sectional structure of a heating body in the heater shown in fig. 1.

Detailed Description

In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "inner", "outer", "left", "right" and the like are used herein for illustrative purposes only and do not represent the only embodiment.

Referring to fig. 1, 2 and 3, a heating and atomizing device according to an embodiment of the present invention is configured to heat a solid atomized substrate to atomize the solid atomized substrate to form aerosol for a user to suck, where the heating and atomizing device includes a heater 10 and a power supply, and when the power supply is powered, the heater 10 can convert electric energy into heat energy, so that the atomized substrate absorbs the heat energy and atomizes the heat energy. The heater 10 includes a housing 110, an inner tube 120, a heating body 200, a coil, and a support body, and the inner tube 120, the heating body 200, the coil, and the support body may be all accommodated in the housing 110, so that the housing 110 protects the four.

In some embodiments, the inner tube 120 may be a cylindrical tubular structure, i.e., the inner tube 120 has a circular cross section, and the inner tube 120 may be a prismatic tubular structure, i.e., the inner tube 120 has a polygonal cross section. Obviously, the inner tube 120 has a lumen, and the heating body 200 can generate heat and is arranged at the lower end of the inner tube 120, so that the opening at the lower end of the lumen is closed, and the lumen heated body 200 is sealed to form the atomization cavity 121, and the opening at the upper end of the lumen is also the opening at the upper end of the atomization cavity 121. The atomizing medium can be accommodated in the atomizing chamber 121 from the upper end opening, so that the atomizing chamber 121 serves to accommodate the atomized substrate.

In some embodiments, the support body is connected to the inner tube 120 and located inside the atomizing chamber 121, and is spaced from the heating body 200 by a certain distance along the axial direction of the inner tube 120, which may be simply understood as that the support body is located above the heating body 200, so that the support body is in a non-contact state with the heating body 200. When the atomized substrate is accommodated in the atomizing chamber 121, the supporting body plays a bearing role on the atomized substrate, that is, the lower end of the atomized substrate contacts with the supporting body, so that the atomized substrate can be effectively prevented from directly forming a contact relationship with the heating body 200 by the isolating action of the supporting body. By making the heating body 200 not directly contact with the atomized substrate, the heat of the heating body 200 can be prevented from being directly conducted onto the atomized substrate without an intermediate medium, and dry burning of the part of the atomized substrate directly contacting with the heating body 200 due to overhigh temperature is avoided, so that peculiar smell gas and other harmful gases with burnt smell generated by dry burning are eliminated, the smoking taste and health safety of aerosol are improved, and good user experience of the whole heating and atomizing device is ensured.

A coil is located in the inner cavity of the housing and outside the atomizing chamber 121, and the coil may be disposed around the heating body 200, and when a high frequency current is supplied to the coil by the power supply, the coil generates an alternating magnetic field that varies at a high speed. Since the coil surrounds the heating body 200, the heating body 200 is in the alternating magnetic field. Under the action of the alternating magnetic field, an alternating current, i.e. an eddy current, is generated inside the heating body 200, and the eddy current enables carriers at the bottom of the container to randomly move at a high speed, and during the high-speed random movement process, the carriers collide and rub with each other to generate heat energy, so that the heating body 200 generates heat. Since the internal molecules of the heating body 200 directly generate heat under the action of the alternating magnetic field, the heating body 200 can be raised to the set temperature in a short time, that is, the preheating time of the heating body 200 is short, and it can be understood that the hot start of the heating body 200 is faster. Meanwhile, the electric energy supplied from the power supply is almost entirely converted into heat of the heating body 200, thereby improving the thermal efficiency of the heating atomizer.

In some embodiments, the heating body 200 is provided with a plurality of heat conducting holes 210, and the heat conducting holes 210 penetrate the entire heating body 200 in the thickness direction, so that the heat conducting holes 210 are through holes. And the shell 110 may be further provided with an air inlet 111 communicated with the outside, and the through hole is simultaneously communicated with the atomizing cavity 121 and the air inlet 111, when the user sucks, external air sequentially enters the atomizing cavity 121 through the air inlet 111 and the heat conducting hole 210, so that the air carrying the aerosol generated in the atomizing cavity 121 is output from the atomizing cavity 121 and absorbed by the user. The aperture of the heat conduction hole 210 is not smaller than 0.3mm, for example, the aperture of the heat conduction hole 210 may be 0.3mm, 0.5mm or 0.8 mm. The length of the heat conductive hole 210 may have a value ranging from 1mm to 1.8mm, for example, the specific value of the length may be 1mm, 1.5mm, 1.8mm, or the like. The central axis of the heat conduction hole 210 may be a straight line 231, and the orthographic projection of the heat conduction hole 210 along the axial direction of the inner tube 120 may be a circle, an ellipse, or a regular polygon. The central axis of the heat conducting hole 210 is parallel to or coincides with the central axis of the inner tube 120, and the extending direction of the central axis represents the axial direction, so the orthographic projection of the heat conducting hole 210 along the central axis thereof is also circular, elliptical or regular polygon. The caliber of the heat conduction hole 210 decreases in a direction in which the heat conduction hole 210 is directed toward the atomizing chamber 121, i.e., in a downward-upward direction.

When the heater 10 is operated, the coil is energized to generate an alternating magnetic field, so that the heating body 200 induces the alternating magnetic field to generate heat. When the user sucks, the external air flows into the heat conduction hole 210 through the air inlet hole 111, and when the ambient air flows through the heat conduction hole 210, the ambient air absorbs the heat generated from the heating body 200 and rapidly heats up, so that the ambient air flow is converted into the high temperature air flow in the heat conduction hole 210. When the high temperature gas flow enters the atomizing chamber 121, the atomizing substrate will absorb the heat of the high temperature gas and reach an atomizing temperature, and finally be atomized to form aerosol under the effect of the atomizing temperature.

If the heating atomizing mode in which the heating body 200 is in direct contact with the atomized substrate is adopted, the following defects occur:

one is to designate a portion of the atomized substrate relatively closer to the heating body 200 as a proximal portion, and a portion of the atomized substrate relatively farther from the heating body 200 as a distal portion. When the heating body 200 generates heat, the heat is conducted from the proximal portion to the distal portion, so that heat distribution between the proximal portion and the distal portion is uneven, thereby generating a certain temperature gradient, resulting in that the proximal portion and the distal portion absorb more heat in the same time, so that the proximal portion generates dry burning due to excessive heat absorption, thereby generating odor gas with burnt smell and other harmful gases, and affecting the sucking taste and health safety of the aerosol. The distal portion may not reach the atomizing temperature due to too little heat absorption, so that the distal portion may not be atomized efficiently. Even in the case where the distal end portion is nebulizable, the difference in particle size in the aerosol generated after the proximal end portion and the distal end portion are nebulized can also affect the suction taste of the aerosol in view of the difference in temperature between the proximal end portion and the distal end portion. In view of the long time required for the distal portion to rise to the fogging temperature, this will reduce the fogging speed of the distal portion and also affect the sensitivity of the heater 10 to the pumping response.

Secondly, dirt generated after the atomization of the atomized matrix is directly adhered to the heating body 200, thereby polluting the heating body 200 and affecting the cleanliness of the heating body 200. When the heating body 200 generates heat, dirt may also absorb the heat of the heating body 200. This results in a loss of heat generated by the heating body 200 on the one hand, thereby reducing the energy utilization rate of the heater 10; on the other hand, the dirt can generate peculiar smell gas and other harmful substances after absorbing heat, and the sucking taste and the health safety of the aerosol are also affected.

Thirdly, the atomized matrix will form carbonized ashes, which will adhere to or surround the heating body 200, and the atomized matrix will be gradually atomized over time, i.e., the atomized amount of the atomized matrix increases, resulting in an increase in the amount of carbonized ashes as well, i.e., the thickness of carbonized ashes will increase. So as the atomized matrix is consumed, the thickness of the carbonized ash is gradually increased, and the distance between the atomized matrix to be atomized and the heating body 200 is increased. During the atomization process, heat generated by the heating body 200 passes through the carbonized ash to reach the atomized substrate. For the prior suction, the total amount and thickness of carbonized ashes are smaller, and less carbonized ashes will absorb less heat, so that the heat of the heating body 200 reaches the atomized substrate to be atomized by a shorter conduction distance, and the heat is less lost in the short-distance conduction process, so that the heat generated by the heating body 200 generates less heat loss when reaching the atomized substrate, and more heat is conducted to the atomized substrate, and then more atomized substrate is atomized to form aerosol with higher concentration. For the subsequent suction, the total amount and thickness of the carbonized ash are larger, and more carbonized ash absorbs more heat, so that the heat of the heating body 200 reaches the atomized substrate to be atomized through a longer conduction distance, and the heat is more lost in the long-distance conduction process, so that the heat generated by the heating body 200 generates more heat loss when reaching the atomized substrate, and less heat is conducted to the atomized substrate, so that less atomized substrate is atomized to form aerosol with lower concentration. Thus, for the first few puffs the concentration of aerosol is larger, and for the latter few puffs the concentration of aerosol is smaller, resulting in a significant difference in mouthfeel between the first few puffs and the latter few puffs.

With the heater 10 of the above embodiment, the heating body 200 is not in direct contact with the atomized substrate, but atomized by absorbing the heat of the high-temperature gas, which has the following advantageous effects:

the high-temperature gas is uniformly distributed in the atomized matrix, so that the existence of the near-end part and the far-end part is eliminated, the high-temperature gas is uniformly distributed in the atomized matrix, the fact that all parts of the atomized matrix absorb heat in the same time and rise to the same temperature is ensured, and the existence of a temperature gradient is eliminated. On the one hand, the atomization matrix can be prevented from being burnt in a dry way due to overhigh temperature, so that the existence of peculiar smell gas with burnt smell and other harmful gases is eliminated, and the suction taste and the health safety of the aerosol are improved. On the other hand, the particle size of particles in the aerosol formed after the atomization of the atomization matrix is uniform, so that the suction taste of the aerosol can be improved, and on the other hand, all parts of the atomization matrix are simultaneously increased to the atomization temperature in a short time to be atomized simultaneously, so that the atomization speed of the atomization matrix is improved, and the sensitivity of the heater 10 to suction response is improved.

Secondly, dirt generated by the atomized matrix cannot adhere to the heating body 200, so that the pollution of the dirt to the heating body 200 is prevented, and the cleanliness of the heating body 200 is improved. On the one hand, heat loss caused by dirt absorbing the heat of the heating body 200 is prevented, so that as much heat of the heating body 200 as possible is transferred to the low temperature gas to be converted into the high temperature gas, thereby improving the energy utilization rate of the heater 10. On the other hand, the peculiar smell gas and other harmful substances generated after the dirt absorbs heat are eliminated, and the sucking taste and the health safety of the aerosol are further improved.

Thirdly, in view of the fact that high-temperature gas can reach and evenly distribute in the atomized matrix, the influence of the total amount and thickness of carbonized ashes can be eliminated, the atomized matrix with the same amount can be guaranteed to be atomized to generate aerosol for each suction of a user, namely the concentration of the aerosol in each suction is guaranteed to be the same, obvious differences of tastes of the former suction and the latter suction are eliminated, and consistency of the sucked tastes and user experience are improved.

Referring to fig. 3, 4 and 5, the heating body 200 has an inner wall surface 220, and the inner wall surface 220 is used to define the boundary of the heat conduction hole 210, and the inner wall surface 220 may also be commonly understood as the inner wall surface 220 of the heat conduction hole 210. With a longitudinal section passing through the central axis of the heat conduction hole 210 as a reference plane, there is an intersection line 230 between the longitudinal section and the inner wall surface 220, and the intersection line 230 may be a straight line 231 (fig. 4), a fold line 232 (fig. 6 and 7), a curve 233 (fig. 5), and the curve 233 includes a parabola, an elliptic line, a hyperbola 233, or the like.

Referring to fig. 4, in some embodiments, when the intersection line 230 is a straight line 231, the intersection line 230 forms an acute angle with the central axis of the heat conducting hole 210, and the acute angle may have a value ranging from 5 ° to 25 °. This makes the heat conduction hole 210 substantially taper-shaped, and in turn makes the aperture of the heat conduction hole 210 gradually decrease in the direction from bottom to top, that is, in a uniformly changing linear decreasing state.

Referring to fig. 6 and 7, in some embodiments, when the intersection line 230 is a fold line 232, the fold line 232 may be divided into three sections, i.e., the fold line 232 includes a first section 232a, a second section 232b, and a third section 232c, the first section 232a being closer to the atomizing chamber 121 than the second section 232b such that the first section 232a is located above the second section 232 b. The third section 232c is connected between the first section 232a and the second section 232b, i.e., one end of the third section 232c is connected to the lower end of the first section 232a, and the other end of the third section 232c is connected to the upper end of the second section 232 b. The first section 232a and the second section 232b are both disposed parallel to the central axis of the heat conduction hole 210, i.e., the first section 232a and the second section 232b both extend in the vertical direction, and the first section 232a is closer to the central axis of the heat conduction hole 210 than the second section 232b, i.e., the distance between the first section 232a and the central axis is smaller than the distance between the second section 232b and the central axis. The third section 232c may be perpendicular to the central axis of the heat conduction hole 210, and the third section 232c may also be at an acute angle to the central axis of the heat conduction hole 210.

Referring to fig. 6, when the third section 232c is perpendicular to the central axis of the heat conduction hole 210, i.e., the third section 232c extends in the horizontal direction. At this time, the heat conduction hole 210 is a stepped hole including a large hole 211 and a small hole 212, and the first section 232a of the fold line 232 corresponds to the small hole 212 and the second section 232b of the fold line 232 corresponds to the small hole 212. Obviously, the large hole 211 and the small hole 212 are cylindrical holes with uniform caliber, the caliber of the large hole 211 is larger than that of the small hole 212, and the small hole 212 is positioned above the large hole 211 and is directly communicated with the atomization cavity 121.

Referring to fig. 7, when the third section 232c forms an acute angle with the central axis of the heat conduction hole 210, the third section 232c is disposed obliquely with respect to the horizontal direction. At this time, the heat conducting hole 210 is also a stepped hole, which includes a large hole 211, a small hole 212 and a transition hole 213, the first section 232a of the fold line 232 corresponds to the small hole 212, the second section 232b of the fold line 232 corresponds to the small hole 212, and the third section 232c of the fold line 232 corresponds to the transition hole 213. Obviously, the large hole 211 and the small hole 212 are cylindrical holes with uniform caliber, the transition hole 213 is a conical hole, and the caliber of the transition hole 213 gradually decreases along the direction from bottom to top; and the aperture diameter of the hole is larger than that of the small hole 212, the transition hole 213 is communicated between the large hole 211 and the small hole 212, and the small hole 212 is positioned above the large hole 211 and is directly communicated with the atomization cavity 121.

If the heat conduction hole 210 is a cylindrical hole with a uniform caliber, that is, in the direction from bottom to top, the caliber of the heat conduction hole 210 is always constant. In the process that the user sucks the low-temperature gas to flow through the heat conducting holes 210, the low-temperature gas is in a laminar flow state in the heat conducting holes 210, so that the low-temperature gas rapidly leaves the heat conducting holes 210 and enters the atomization cavity 121, and thus the low-temperature gas does not have enough time to exchange heat with the heating body 200, namely, the low-temperature gas is insufficiently heated, and therefore, the low-temperature gas absorbs less heat to enter the atomization cavity 121. This results in on the one hand relatively less of the heat absorbed by the nebulized matrix being nebulized, resulting in a lower aerosol concentration. On the other hand, it takes a longer time for the atomized substrate to reach the atomizing temperature, thereby decreasing the atomizing speed of the atomized substrate to affect the suction sensitivity of the heater 10. On the other hand, heat of the heating body 200 not absorbed by the low temperature gas is wasted, thereby reducing heat exchange efficiency and energy utilization of the heater 10. Meanwhile, heat not absorbed by the low temperature gas is further conducted to the housing 110, so that the housing 110 generates a hot uncomfortable feeling to the user, thereby affecting the user experience. Of course, in order to increase the heat utilization rate, a manner of increasing the caliber and length of the heat conduction holes 210 may be adopted, thereby increasing the contact area and contact time of the low temperature gas with the heating body 200, so that the low temperature gas absorbs as much heat of the heating body 200 as possible. However, this method will increase the volume of the heating body 200, which is disadvantageous in the miniaturization design of the heater 10.

With the heater 10 in the above embodiment, the caliber of the heat conduction hole 210 decreases in the direction from bottom to top, and in the process of making the low temperature gas flow through the heat conduction hole 210 by the suction of the user, the flow rate of the low temperature gas at the upper portion of the heat conduction hole 210 is greater than the flow rate at the lower portion of the heat conduction hole 210, so that the low temperature gas is in a turbulent state, that is, in a turbulent state, in the heat conduction hole 210, so that the low temperature gas forms a great deal of vortex in the heat conduction hole 210, thereby reasonably prolonging the residence time of the low temperature gas in the heat conduction hole 210, making the low temperature gas perform sufficient heat exchange with the heating body 200, that is, the low temperature gas is heated sufficiently, and ensuring that the low temperature gas absorbs as much heat as possible into the atomizing cavity 121. On the one hand, the atomization matrix absorbs heat to be atomized, and the concentration of aerosol is improved. On the other hand, the atomized substrate reaches the atomizing temperature rapidly in a shorter time, thereby increasing the atomizing speed of the atomized substrate to increase the suction sensitivity of the heater 10. On the other hand, most of the heat generated by the heating body 200 is absorbed by the low temperature gas, thereby improving the heat exchange efficiency and the energy utilization rate of the heater 10. Meanwhile, the heat which is not absorbed by the low-temperature gas is greatly reduced, so that the heat is prevented from being further conducted to the shell 110 to cause hot discomfort to a user, and the user experience is further improved. Nor is it necessary to increase the diameter and length of the heat conduction holes 210, and thus the volume of the heating body 200 is not increased, so that the heater 10 can be designed to be miniaturized.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (10)

1. A heater, comprising:

an inner tube provided with an atomization cavity for accommodating an atomization matrix; and

The heating body is connected with the inner pipe to seal the atomizing cavity, a heat conduction hole which is communicated with the atomizing cavity and the outside is formed in the heating body, the caliber of the heat conduction hole is reduced along the direction that the heat conduction hole points to the atomizing cavity, and gas flowing through the heat conduction hole absorbs heat and then enters the atomizing cavity to heat an atomized substrate; the caliber of the heat conduction hole is not smaller than 0.3mm.

2. The heater of claim 1 wherein the central axis of the heat transfer aperture is a straight line.

3. The heater of claim 1, wherein the heat transfer aperture is circular, elliptical or regular polygon in orthographic projection along the inner tube axis.

4. The heater of claim 1, wherein said heating body has an inner wall surface defining a boundary of said heat transfer hole, and a longitudinal section through a central axis of said heat transfer hole has an intersection line with said inner wall surface, said intersection line being a straight line, a broken line, a parabola, an elliptic line, or a hyperbola.

5. The heater of claim 4 wherein said intersection is at an acute angle to a central axis of said heat transfer aperture when said intersection is a straight line.

6. The heater of claim 4, wherein when the intersection is a fold line, the intersection comprises a first segment, a second segment, and a third segment, the third segment being connected between the first segment and the second segment, both the first segment and the second segment being parallel to a central axis of the heat transfer aperture, and the first segment being closer to the central axis of the heat transfer aperture and the nebulization chamber than the second segment.

7. The heater of claim 6 wherein the third section is perpendicular to a central axis of the thermally conductive aperture; alternatively, the third section forms an acute angle with the central axis of the heat conduction hole.

8. The heater of claim 1 wherein the thermally conductive aperture has a length of 1mm to 1.8mm.

9. The heater of claim 1, further comprising at least one of the following:

the heater is an electromagnetic induction heater capable of generating heat under the action of electromagnetic waves;

the atomizing device also comprises a support piece positioned in the atomizing cavity, wherein the support piece is arranged at intervals with the heater and is used for bearing an atomizing substrate.

10. A heating atomizer comprising a heater as claimed in any one of claims 1 to 9.